Coupling-retaining means for metallic hose.



- PATENTED JULY 17, 1906. R. B. PAINTON., COUPLING RETAINING MEANS FOR METALLIC HOSE.

APPLIGATION FILED AUGA. 1905.

UNITED STATES PATENT OFFICE.

RICHARD BENJAMTN PAINTON, OF \VILLIAMSPORT, PENNSYLVANIA, .ASSIGNOR OF ONE-THIRD TO JACOB HESS BAILEY, OF MUNCY,

PENNSYLVANIA, AND WILLIAM sYLvAN A.

BAILEY, OF JERSEY SHORE, PENN- COUPLING-RETAINING MEANS FOR METALLIC HOS-E.

Specification of Letters Patent.

Patented July 17, 1906.

Application filed August 4, 1905. Serial No. 272,753.

To all whom, it ntay concern;

Be it known that I, RICHARD BENJAMIN PAINTON, a citizen of the United States, residing at WVilliamsport, in the county of Lycomin and State of- Pennsylvania, have invented certain new and useful Improvements in Coupling Retainin Means for Metallic Hose, of which the to lowing is a specification.

- tubing This invention relates to metallic hose or of thetype designed particularly as a substitute for the ordinary rubber hose such as employed for air-brake, signal, and

steam-pipe connections for railwa *-cars, and

primarily has in view improved retaining means for the coupling connections for the hose. l f

The improvements are specially applicable to that type of'flexible "metallic hose es' sentially consisting of a close spirally-wound metal strip or ribbon, each convolution or coil of which has a-loose-packed joint connection with the adjacent convolutionsor coilsfwhereby the tubing may be bent or distorted to any position and maintain an imperfor'ate nonle'akin passage-Way therethrough; This form metallic tubing possesses special utility as a substitute for the ordinary rubber brake-hose on account of away-{thereof from its coupling.

--ject1ons are entirel the exceptional strength and durability "thereof, besides its economy over the use of rubber. It is well known that the ordinary rubber brake-hose quickly loses its utility. The weather conditions cause the same to harden and crack, while constant manipulation occasions the frequent tearing These obovercome by the em ,ployment of a flexib e-jointed metallic tubing ofthe character indicated, and the present invention is designed to increase the efficiency thereof in its use for various purposes, particularly as the hose connection for the air-brake, signal, or steam pipes of railwaytrains. 1 1

,;-The particular utility of a flexible jointed metallic tubing such as described has already been demonstrated; but one .of, the-difiic ties attending the use thereof is that of a tendency to work outof its coupling connec position as would perprimary object of this invention to associate with flexible metallic tubin a joint-sustaining spring so arranged an related thereto as to maintain a permanent non-leaking joint between the metallic tubing and its couplings or coupling connections, besides maintaining the individual joints of the tubing itself tight under all conditions and in all positions of the tubing, thereby reducing the possibility of leakage to a minimum at any point throughout the length or at the coupling ends of the tubing.

With these and other objects in view, which will more readily appear as the nature of the invention is better undertsood, the same consists in the novel construction, combination, and arrangement ofparts which will be hereinafter more fully described, illustrated, and claimed.

The essential features of the invention involved in the association of a joint-sustaining spring with a metallic tubing are necessarily susceptible to modification without departing from the spirit of the invention, but

perferred embodiments thereof are shown in the accompanying drawings, in which Figure 1 is an elevation, partly in' section, of a metallic hose embodyin the present .invention and shown adapted or use as an airbrake connection. Fig. 2 is a similar view showing a modification in which a separate j oint-sustaining spring may be associated with each end cap for the tubing or hose. Fig. 3 is a detail sectional view of a portion of tubing with which the invention is preferably associated.

Like reference-numerals designate corresponding parts throughout the several figures of the'drawings.

In carrying out the invention no special change is intended metallictubing; of manufacturing this tubing may be resorted to, and in the drawings by the numeral 1.

in the drawings essentially consists of a closely and spirally wound metal strip or bon, the individual convolutions or coils of which are loosely interlocked and packed, as

in the construction of the Any of the known methods '95 the same is designated The form of tubing shown 1 rib- 1 IOO indicated bythe numeral 2 in Fig. 3v of the drawings.

By reason of the spiral coiling of the strip or ribbonconstituting the metallic tubing the convolutions of coils thereof have a pitch in one direction, and in the employment of the tubing, particularly as an air-brake connection, the same is designed to have fitted to the oppositie ends thereof the couplings 3, adapted to be connected with the usual fittings of the air-brake system. However, the couplings 3 may be of such a nature as to connect the section of tubing shown in the drawings with. any line of piping for any purpose; but irrespective of the use of the metallic hose or tubing the couplings 3 are preferably provided at' one end with the interiorlythreaded necks 4, adapted to be screwed onto the ends of the tubing 1 and secured thereon through the medium of the set-screws or equivalent fastenings 5.

By reason of the spiral or thread-like winding of the coils of the tubing 1 the constant handling and twisting of said tubing has a tendency to loosen up the threaded joint connections between the same and the couplings 3 and, in fact, to unscrew from said connections, so it is the purpose of the present invention to obviatethat result. This is accomplished primarily through the medium of a oint-sustaining spring 6.

The oint-sustaining spring 6 is thoroughly tempered and is designed to be arranged on the exterior of the metallic ,tubing 1 One of the distinctive features of the invention resides inhav-ing the coils or convolutions of the spring 6 wound opposite to and crossing the coils or convolutions of the tubing 1, as plainly Sl10\ n in Fig. 1' of the drawings, so that when said spring is coupled or fastened up the contrary pitch or winding thereof wi ll serve to counteract any tendency oi" the tubing' 1 to screw out of its terminal couplings. Furthermore, the spring 6 is designed to be slightly compressed to its fastened position, so as to normally exert a straightening and tightening influence throughout the entire extent of tubing over which it is placed, and in one form of the invention the spring 6 e2;- tends over the metalliotubing l the entire length of the latter and has a rigid yet detachable fastened connection with the pen manent couplings 3 for the tubing.

Any suitable and practical. expedients may be resorted to for rigidly and detachably securing the ends of the joint-sustaining spring 6 to the terminal couplings 3. A snnple means for accomplishing this result is shown in the drawings and may consist of providing the threaded-neck of each coupling 3 with an exterior annular groove 7 receiving a termina'l coilof the spring, which is bound in said screw through the medium o1 a detachable fastening-clamp 8i This clamp is iliustrated as being 01 the split hand or type, having at its ternnnclsthe bolt-ears 2, receiving the clamp bolt 10 n" tightening the clamp body or ring upon the exterior of the cmrphng-necic.

' a se iarate 'oint-susta ll. s so ssaess 1. Also the clamp body or ring n vided Wjitll a retaining lug or lug ing corresponding sockets or grooves is the neck 4 to provide means for positively preventing displacen'ient of the clamp from its position over the spring-coil held in the groove 7.

in the arrangement of the invention. ee scribed it will be seen that the sustainingspring 6 extends from one end of the metallic 7 tubing to the other end and is secur y fastened at its ends to the terminal couplings for the tubing. By reasm'x. of normally exerting a contractile stress it will be obvious that addition to its function of counteracting tendency of the tubing to turn out o couplings the ame will hold the can tight upon the tubing ends and also wi l stantly maintain the individual joints o tubing tight in Whatever position the tubing may he moved. Also the spring always tends to straighten th 'lubing.

.[i modification. of the in ention which way be resorted to is illust. .d in 2 of drawings and consistsin associating a separate joint-sustaining spring 6 ich each of the terminal couplings 3, but connecting it with such couplings in the same manner as already described. However, in this adaptation the springs are intended to terminate short each other at an intermediate point on the tubing 6, so as to leave a suiiioient portion a said tubing uncovered by the spring to ice tate the i'iandling thereof in its use ahrahe or similar hose.

In the employment ot' a separate sprin extending from each coupling an in construction may be r sorted to Wi her parting from the sp'. of the inv i sacrificing any of the 8. stages What I claim as my invention, and to secure by Letters Patent, is-

1. The combinatf i TCll tubing, of a screws" th said itting and wit .3161 to oppose rotation ection of unscrewi The combination v rig, of a part connects-o no one 2o clamps detachably mounted on'tli'e terminal bya screw connection, a spring-carried by th tubing and having one end connected to saidxpart and/the other end in connection With-the 'tlibing" in a manner to oppose-its rotation in the; direction ..to;ui1 scr'ew it from the said connectedpart.

3. The combination of a flexible coiled 1netallic tubing having-terminal "coupling connections', and a retractile joint-sustaining spring encii'clingthe'tu'bi-ng and rigidly sccnred' to the ooupling connections thereof, said s ri' site direction to those of the tubing 4. The combination of aiflexible coiled metallic tubing, couplings detachably mounted on'theends time tubing, a coiled joint-susmining-spring arranged upon the tubing and' its coils wound in an opposite direchaving tion to the coils of theflatteriand fasteningco'iledabout said tubin I connections for its en s', said spring,being haying-its coils woundin' an oppo'-;

6, The combination of a flexible metallic tubing, and a separate joint-sustaining spring coiled abor'it' the tiibing and hav-i "g 1t's coils Wound in an o plosite direction to t ose'ofthe tubing, and. astening connections for tlfe ends of the spring.

In testinlony'whereof I afiix my signature in presence of two witnesses.

RICHARD Bmmin' ruxrox.

Witnesses:

RENA (3.;BnADno0r. D. P. VVOLHAUPTER; 

